CVE-2024-11777 is a stored cross-site scripting vulnerability in the Sell Media plugin for WordPress, affecting all versions up to 2.5.8.5. The issue is due to improper neutralization of input in the 'sell_media_search_form_gutenberg' shortcode, where user-supplied attributes are not properly sanitized or escaped before output. Authenticated attackers with contributor or higher privileges can inject arbitrary JavaScript that executes in the context of users visiting the compromised page, potentially leading to session hijacking or other script-based attacks. The CVSS 3.1 base score is 6.4 (medium), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and partial impact on confidentiality and integrity.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who view the infected pages, potentially compromising user sessions or data confidentiality and integrity. The vulnerability does not impact availability. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or avoiding use of the 'sell_media_search_form_gutenberg' shortcode. Monitor vendor channels for updates and apply patches promptly once released.